On the origin of the HLX-1 outbursts
On the origin of the HLX-1 outbursts
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关于HLX-1爆发的起源
DOI：
10.1093/mnrasl/slw159
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发表时间：
2016
影响因子：
4.8
通讯作者：
Liu Tong
中科院分区：
文献类型：
--
作者：
Sun Mouyuan;Gu Wei-Min;Yan Zhen;Wu Qingwen;Liu Tong
HLX-1是目前最好的中等质量黑洞候选者，它经历了七次剧烈的爆发，每次爆发的X射线亮度峰值为L_{\mathrm{peak}，\mathrm{X}}\sim 10^{42}\ \rm{erg\ s^{-1}}$。有趣的是，HLX-1爆发的性质随时间而演变。在这项工作中，我们的目标是约束的HLX-1爆发的黑洞吸积的框架内的中央引擎的物理参数。我们发现HLX-1爆发的物理性质与辐射压不稳定性驱动一致。这种情况下可以解释的HLX-1爆发的周期性时间尺度的演变作为持续时间的函数。
HLX-1, currently the best intermediate-mass black hole candidate, has undergone seven violent outbursts, each with a peak X-ray luminosity of $L_{\mathrm{peak},\mathrm{X}}\sim 10^{42}\ \rm{erg\ s^{-1}}$. Interestingly, the properties of the HLX-1 outbursts evolve with time. In this work, we aim to constrain the physical parameters of the central engine of the HLX-1 outbursts in the framework of the black hole accretion. We find that the physical properties of the HLX-1 outbursts are consistent with being driven by the radiation pressure instability. This scenario can explain the evolution of the recurrent timescales of the HLX-1 outbursts as a function of the durations.